This research monograph focuses on equal opportunity for admission to higher education. As private education becomes widespread, the education gap among regions, and among social classes, noticeably widens while at the same, competitiveness of public education weakens. Further, the growing education gap is hindering the pursuit of equal opportunity in education guaranteed by the Constitution. Not only that, the growing education gap works to prevent students from the poor class and regional areas with underdeveloped educational environment from self-improvement opportunity in their school years, significantly undermining the effectiveness of human resource development when viewed from the national perspective. Several efforts have been put forth to resolve the education gap including strengthening public education, restraining private education and implementing programs to upgrade scholastic ability of educationally underdeveloped regions. However, under the circumstance where the education gap in secondary education directly leads to opportunity gap in higher education, there are not many studies that actively deal with the issue of equal opportunity in the admission to higher education.